地质科技通报2026，Vol.45Issue(2)：68-77,10.DOI:10.19509/j.cnki.dzkq.tb20240394
基于AHP-CRITIC法的储层非均质定量表征:以樊151块沙四上纯下次亚段24小层为例
Quantitative characterization of reservoir heterogeneity using the AHP-CRITIC method:A case study of the 24 layer of Es4scx submember in Block Fan 151
摘要
Abstract
Block Fan 151 is a low-permeability beach-bar sandstone reservoir with poor overall physical properties and strong heterogeneity,resulting in low oil recovery and a large amount of residual oil during its development.It is essential to analyze the influence of reservoir heterogeneity on the distribution of residual oil and identify its enrichment areas.Furthermore,calculating the reservoir heterogeneity comprehensive index plays a crucial role in quantitatively characterizing heterogeneity.Therefore,improving the accuracy of calculating the comprehensive index can provide a basis for predicting favorable areas for oilfield development and finding residual oil.[Objective]To improve the accuracy of the comprehensive reservoir heterogeneity index calculation,[Methods]this study proposes the analytic hierarchy process(AHP)-criteria importance though intercrieria correlation(CRITIC)combined weighting method.This method determines the composite weight of evaluation indicators using both subjective and objective data,overcoming the limitations of a single weighting method.[Results]Quantitative analysis of the reservoir heterogeneity of the 24 layer of Es4scx submember in Block Fan 151 shows that the heterogeneity composite index I ranges from 0.27 to 0.73,with approximately 63% of the values ranging from 0.4 to 0.65.The target formation in the study area shows moderate to strong heterogeneity,and the distribution of high values of the anisotropy composite index I aligns closely with the high-value areas on the residual oil saturation contour map.This indicates that the AHP-CRITIC combined weighting method can reasonably assign weights to the evaluation indicators and construct a quantitative evaluation standard for the reservoir heterogeneity of this layer[Conclusion]This approach provides a new method for the quantitative characterization of reservoir heterogeneity.关键词
层次分析法(AHP)-客观赋权法(CRITIC)组合赋权法/储层非均质性/定量表征/樊 151 块Key words
analytic hierarchy process(AHP)-criteria importance though intercrieria correlation(CRITIC)combined weighting method/reservoir heterogeneity/quantitative characterization/Block Fan 151分类
天文与地球科学引用本文复制引用
杨怡梦,徐守余,陈麦雨,崔改霞,胡津..基于AHP-CRITIC法的储层非均质定量表征:以樊151块沙四上纯下次亚段24小层为例[J].地质科技通报,2026,45(2):68-77,10.基金项目
国家科技重大专项课题(2017ZX05009001) （2017ZX05009001）
